import cv2

img_path = "/ssd1T/data/jd/photo/Second3_White255.bmp"

img = cv2.imread(img_path) 

cv2.rectangle(img,(384,100),(510,128),(0,0,255),3)

cv2.imwrite('/ssd1T/data/jd/photo/Second3_White255_box.bmp',img)